CVE-2003-0121

Exp

Clearswift MAILsweeper 4.x allows remote attackers to bypass attachment detection via an attachment that does not specify a MIME-Version header field, which is processed by some mail clients.

Published: 2003-03-18 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2003-0121 is rated High Exploit Risk (74.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.95%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2003-0121

EDB-ID Source Kind Published Link
22338 exploit_db edb 2003-03-07 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2003-0121

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-04 3.36% 2.95% -0.41%
2 2026-01-29 4.41% 3.36% -1.05%
3 2025-07-23 — 4.41% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2003-0121

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2003-0121

Affected software / configurations for CVE-2003-0121

Vendor Product Version Raw CPE
clearswift mailsweeper 4.0 cpe:2.3:a:clearswift:mailsweeper:4.0:*:*:*:*:*:*:*
clearswift mailsweeper 4.1 cpe:2.3:a:clearswift:mailsweeper:4.1:*:*:*:*:*:*:*
clearswift mailsweeper 4.2 cpe:2.3:a:clearswift:mailsweeper:4.2:*:*:*:*:*:*:*
clearswift mailsweeper 4.3 cpe:2.3:a:clearswift:mailsweeper:4.3:*:*:*:*:*:*:*

References for CVE-2003-0121

cvelogic Threat Intelligence